Abstract: The invention relates to a method for installing battery modules in a container in such a way as to maximize the amount of energy installed, while providing modularity of the voltage delivered by the container. The invention also relates to a method for installing electrochemical elements of parallelepipedal format in a volume of parallelepipedal format, such as a module or a vertical volume of a container.

Abstract: A battery architecture based on putting n branches of battery modules in parallel associated with a DC/DC converter, the whole being controlled by an intelligent controller. It is thus possible to isolate a branch, connect it to the DC/DC converter and then carry out operations of charging or discharging of this branch using the power available from the battery modules of the n?1 other brandies. At the same time the n?1 other branches remain available for a user. The branch that has been isolated is then reconnected to the other branches to reconstitute the initial system. This architecture makes it possible to carry out operations such as balancing of voltages between modules, determination of the state of charge, and measurement of capacity. This architecture comprises a single voltage step-down/step-up DC/DC converter, bidirectional with respect to current, able to provide, in each branch individually, the charging and discharging of the module or modules of said branch.

Abstract: The invention is a monitoring system for a battery having a plurality of accumulators. The system comprises apparatus for measuring the voltage on the terminals of each accumulator; measuring the temperature of the battery; measuring the current flowing through the battery, calculating a voltage difference between a maximum voltage measured on the terminals of one of the accumulators and a minimum voltage measured on the terminals of one of the accumulators; comparing the voltage difference with at least one threshold value depending on the measured temperature and current, and reporting an error if the voltage difference is greater than or equal to the at least one threshold value.

Abstract: A method for determining the state of health (SOH) of a battery is provided in which cell impedance is determined continuously, and including determining one or more confidence coefficients that depend on one or several variables selected from cell current, temperature or state of charge or their derivatives or integrals with respect to time, and continuously determining the state of health of the battery at a given point in time, using the state of health of the battery at a preceding point in time corrected as a function of cell impedance determined at the given point in time and weighted by the confidence coefficient or coefficients. The method provides a reliable way of determining the state of health of the battery with greater stability and robustness than existing methods.

Abstract: The invention is a monitoring system for a battery having a plurality of accumulators. The system comprises means for measuring the voltage on the terminals of each accumulator, means for measuring the temperature of the battery, means for measuring the current flowing through the battery, means for calculating a voltage difference between a maximum voltage measured on the terminals of one of the accumulators and a minimum voltage measured on the terminals of one of the accumulators, means for comparing the voltage difference with at least one threshold value depending on the measured temperature and current, and means reporting an error if the voltage difference is greater than or equal to said at least one threshold value.

Abstract: A method for determining the state of health (SOH) of a battery is provided in which cell impedance is determined continuously, and including determining one or more confidence coefficients that depend on one or several variables selected from cell current, temperature or state of charge or their derivatives or integrals with respect to time, and continuously determining the state of health of the battery at a given point in time, using the state of health of the battery at a preceding point in time corrected as a function of cell impedance determined at the given point in time and weighted by the confidence coefficient or coefficients. The method provides a reliable way of determining the state of health of the battery with greater stability and robustness than existing methods.